Asus ProZ790-CREATOR WIFI LGA 1700 ATX Motherboard - Manual (Page 81)

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Boot from Storage Devices
Allows you to select the type of storage devices that you want to launch.
Configuration options: [Ignore] [Legacy only] [UEFI only]
Boot from PCI-E/PCI Expansion Devices
Allows you to select the type of PCI-E/PCI expansion devices that you want to launch.
Configuration options: [Ignore] [Legacy only] [UEFI only]
Secure Boot
Allows you to configure the Windows ® Secure Boot settings and manage its keys to protect
the system from unauthorized access and malwares during POST.
OS Type
[Windows UEFI Mode] This item allows you to select your installed operating
system. Execute the Microsoft ® Secure Boot check. Only
select this option when booting on Windows ® UEFI mode
or other Microsoft ® Secure Boot compliant OS.
[Other OS] Get the optimized function when booting on Windows ®
non-UEFI mode. Microsoft ® Secure Boot only supports
Windows ® UEFI mode.
The Microsoft secure boot can only function properly on Windows UEFI mode.
Secure Boot Mode
This option allows you to select the Secure Boot mode from between Standard or
Custom. In Custom mode, Secure Boot Policy variables can be configured by a
physically present user without full authentication.
Configuration options: [Standard] [Custom]
The following item appears only when Secure Boot Mode is set to [Custom] .
Key Management
Install Default Secure Boot keys
Allows you to immediately load the default Security Boot keys, Platform key (PK), Key-
exchange Key (KEK), Signature database (db), and Revoked Signatures (dbx). When
the default Secure boot keys are loaded, the PK state will change from Unloaded
mode to loaded mode.
Clear Secure Boot keys
This item appears only when you load the default Secure Boot keys. Allows you to
clear all default Secure Boot keys.
Save all Secure Boot variables
Allows you to save all secure boot keys to a USB storage device.
PK Management
The Platform Key (PK) locks and secures the firmware from any permissible changes.
The system verifies the PK before your system enters the OS.
Save To File
Allows you to save the PK to a USB storage device.